Apparatus for the exhibition of pictures, announcements, and the like



J- EVANS AXPARATUS FOR was EXHIBITION or PICTURES, ANNYOUNCEIENTS, AND was LIKE Filed April 18. 1922 3 Sheets-Sheet 1 IN VE/VTOR nus ATTK

3 Sheets-Sheet 2 ANNOUNCEMENTS, AND THE LIKE J. EVANS HHHIIIIIIIIH Filed April 18 Oct. 20, 1925.

APPARATUS FOR THE EXHIBITION 0F PICTURES INVE/V To)? (/a/m' w y [VA/vs A-TT),

Oct. 20, 1925. 1,558,151

J. EVANS APPARATUS FOR THE EXHIBITION OF PICTURES, ANNOUNCEMENTS, AND THE LIKE Filed April 18. 1922 3 Sheets-Sheet 5 FIG-.5.

lNVE/(TOR.

By J H /Emvs GEO/1W Vid ATI'K rmaaoa. 20, me

. UNITED sra'rssf PATENT oFFics;

I JOHN EVANS, 01' mm, ENGLAND.

mm'me ron m on or Pic-rum, mooncmmrrs, arm nu: ma. 5

Application am April 18, Serial No. 555,288.

To all'whom itma'y 'corwem:

- Be it lmown that-I, Jorm Evans, a Sta v jectof His Ma'est the King of England,

and resident o E tham, in the county of Kent, Kingdom of England,'have invented certain new: and useful Improvements in and Relating to-A paratus for the Exhibition of Pictures, nouncements, and the like, ofwhich the following is a specification. I

This invention refers to improvements in and relating'to apparatus for the exhibition of ictures, announcements, advertisements and the like,- and it has more particular reference to apparatus of the kind comprisin a rotatable "picture-carrying disc arranged in connection wit a kinematograph' pro ector or lantern, the device being driven from an electric motor by means of suitable gearin and an intermittent movement device.-

e object of the present invention is to provide certain im rovements in the operatmg mechanisman in the eneral construction, arrangement, and com ination of parts of suchap aratus.

In order slat the invention may be clearly understobd and readily carried into effectit is hereinafter described with reference to the accompanying drawings, in which 1-. Figure 1 is a sectional front elevation of projector apparatus constructed in accordance with the present invention;

Figure 2 is a sectional side elevation of said apparatus; i

Figure 3 is a lan view corres onding to Figure 1 but without the lampcase, and showing the general; arrangement of the gearing and the disc operatmg, mechanism, and

Fi modi ed form of ring for use with ap a ratus for exhibiting posters and the li e.'

As shown the improved apparatus comprises aiprojector a and lamp-house b of any convenient construction, a rotatable p1cture-carryin disc, 0, a revolving shutter d and motor ive'n means for intermittently effecting the rotation ofth'e and shutafter the manner of ter at any desired speed s a kinemato' ph, or more slowly for the exhibition 0 posters or the like. According to the chief feature of thisinvention the operating means employed comprises a claw or arm a adaptedto engage the perforations c in the picture-carrying c, and

re 4 is a detail view of aeslightly "centri gal governor m or .shown the shutter Z 18 d n the {10 i ably mounted in a carrier ein a suit-able guide f and operated directly by means of a cam g The cam g which may be of any suitable construction, may comprise a cyhndrical disc 9 having a sinuous groove g 00 cut circumferentially in its peripheral edge, the said groove being also cut to varyin depths so as not only to control the latera -movement of the claw or arm e but also to enable it to recede from the perforations c in'the disc 0 after each forward movement has been effected. The claw or arm may be controlled and pressed towards the cam'b -means of a, suitable spring or springs Thus, asthe cam g rotates, the claw or arm' 7 e which is spring or ravity controlled, will be allowed to move ack from the disc 0,

then out again to engage in the perforations c in the disc, then forward togive the disc 0 its necessary intermittent movement 7 then back and out again, when the'cycle o operations is repeated. By this means 1am enabled to provide "more silent operating mechanism than is ossible where a Maltese cross or Geneva w eel is employed. The perforations 0' may be. provided in the periphery or other portion of the disc 0 itself, or in a metal'disc a on to which the film mayx be clamped or secured b suitable means suc as the rivets a. The c itself may be of celluloid, or where a metal clampin disc 0 is employed a lass disc may be use A suitable form 0 clamping device or hinged gate i is provided to keep the film c in its correct posltion in relation to the lens of the apparatus. In some cases I may also provi e a colour screen or a colour shutter in connection with the projector. The apparatus is also provided with a motor drlven fan or air blast producing apparatus 7' adapted to direct a stream of an through a nozzle is on to the gate of the pro'ector and between the lensand the disc 0, t us preventing overheatin of the disc 0 and eliminating the risk of re should the apparatus be kept in continuous operation for long periods of time. An automatic gravit actuated shutter Zcbhtrolled' bya other means actuated by the driving gear is' also provided to close the gate 1 and shie d the disc 0 from the heat ofthe projecting lamp 0 when the apparatus is at rest; In the construction redby an arm Z J a r0118 shutter shaftw and the governor m is secured to a disc revolving with the shutter shaft 10. The governor m is pivotally mounted and when the shaft w is rotated flies out under the influence of centrifugal force making contact with the flange of the disc Z and moving it to one side to open the gate of the projector.

Reducing gear may be provided if desired so that the apparatus may be driven at any desired speed for different effects or classes of picture. i For instance where it is desired to exhibit separate posters or the like, worm gearing of the kind shown in Figure 4 may e substituted for the bevel and spur gearing shown in Figures 1 to 3 and interposed between the motor. and the camshaft p. In the case of the poster machine only one blade would be provided in the shutter to mask the movement of the picture, or the light could be momentarily cut off. i

In the particular construction illustrated with reference to Figures 1 to 3 the cam g is mounted on a shaft 2 which is driven from the motor by means of a belt running on the wheel 9. The shaft 72, by means of bevel gear wheels 1 and 8, also drives another shaft t, which by spur gearing u 0, drives the shaft w on which the shutter d is mounted. The shaft 1) also carries another pulley wheel a; which by another belt y angwpulley 2 drives the fan 7'.

at I claim is 1. In exhibition apparatus, a rotatable disc havin thereon pictures to be displayed and provi ed with a plurality of perforations, a pin movable transversely to said disc and engageable in the perforations therein, a slide in which said pin is movable, a cam having a gaged an which controls the transverse movement of said pin relative to said disc, means yieldably maintaining said pin in enga ement with said groove, and means coacting with said pin and the sides of said groove for actuating said slide whereby said isc is progressively rotated.

2. In exhibition apparatus, a rotatable disc having thereon plctures to be displayed and. provided with a plurality of perfora-f' tions, a pin movable transversely to said disc and en ageable in the perforations therein, a slide in which said pin is movable, and a rotatable member having a cam groove therein and a second groove of varying depth in said cam groove, said slide en aging in p said cam groove and operated t ereby to progressive y rotate said disc and said pin engaging in said second groove and movable by such engagement, as said member is (groove in which said pin is enrotated, into and out of the perforations in said disc.

3. In exhibition apparatus, a rotatable disc havin thereon pictures to be displayed and provi ed with a plurality of perforations, a pin movable" transversely to said disc and en age'able in the perforations therein, a sli e in which said pin il movable, a rotatable member having a c groove therein and a second groove of va depth in said cam groove, said slide engaging in said cam groove and operated thereby to progressive y rotate said disc and said pin engaging in said second groove and movable by such engagement, as said member is rotated, into and out of the perforations 'in said disc, and means carried by said slide and engageable withsaid pin to yieldabl maintain the pin in engagement with sn'i second groove.

4. In exhibition apparatus, the combination with a rotatable disc having marginally displayed pictures and a circular row of uniformly spaced perforations, of a pin suited to enga e in the mentioned perforations, a slide in which saidpin is uided longitudinally, transversely of said isc, a cam having a groove controlling the rectilinear movement of said pin, springs in said slide forcing said pin against the cam groove, and means coacting with said pin and the sides of the cam groove for actuating said slide whereby said disc is progressively rotated. l

5. In exhibition'apparatus, the combination with a rotatable disc, an annular film secured concentrically thereon and including a plurality of radially disposed pictures, said isc having a circular row of like rforations evenly spaced and equi-distant m. the center,'iof a power driven shaft disposed in a plane at a right angle to the axis of said disc, a cylindrical cam on said shaft, said cam having a sinuous groove and a second groove of varying depth 1n the bottom of the first groove, a slide interjacent said cam and disc, a pin 0 erable in said slide, one end of said pin ing engageable in the perforation ofsaid disc and the other end in said second groove, springs urging said pin into the bottom of the second groove, and means carried by said pin engaging in the first groove whereby said pin an s do are moved latera'll and in timed relation to the raising and. owering of the In testimony whereof I signed my name. 2

JOHN Evans;

have hereunto Ill 

